Okay, so as of right now only the newer Xserves boot in 64bit by default. Other newer machines are capable of 64bit booting - and can if you do the 64 startup - but it's not default. So my question is, when will 64bit booting become default? I know that I have a few 32bit extensions but once they're updated will 64bit booting be default or what? Do the frameworks have to be 64bit?